Sounds like you don't have a good manager, if this wasn't being communicated to you and she had her boss deliver this feedback to you alone. You should talk wit

Sounds like you don't have a good manager, if this wasn't being communicated to you and she had her boss deliver this feedback to you alone. You should talk with your manager about it and if you don't feel the relationship improves soon, my advice is to switch teams (at the same company) or companies entirely. If you have a bad relationship with your manager, it's going to be unfun to work there, and life's too short.